An algorithm for 3-D automatic movement detection by means of standard TV cameras.
An algorithm for the computation of 3-D coordinates (space intersection) of marked points on a moving subject surveyed by a couple of TV cameras is presented herein. It has been designed in order to meet the requirements of routinary analysis in biomechanic laboratories. 3-D geometrical arrangement of the TV cameras (space resection) is obtained by means of a method which is based on an iterative least-squares estimation and requires little time for calibration operations; 3-D coordinates are computed by means of a fast geometrical intersection algorithm. The whole algorithm has been extensively used in different laboratories and results on its reliability and accuracy are reported.
Borghese
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Istituto di Fisiologia dei Centri Nervosi-CNR, Milano, Italy.
Ferrigno
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G
D000465:Algorithms; D001696:Biomechanical Phenomena; D006801:Humans; D007091:Image Processing, Computer-Assisted; D009068:Movement / Q000502:physiology*; D013690:Television / Q000295:instrumentation*